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PRINTING TELEGRAPH. 1 N0. 319,855. PatentedJune '9, 1885.

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ATENT v GEORGE B. SCOTT, OF BROOKLYN, ASSIGN OR TO THE WVESTERN UNION TELE- GRAPH COMPANY, NEW YORK, N. Y.

PRINTING-TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 319,855, dated June 9, 1885.

Application filed September 20, 1884. (N mcdel.)

To all whom, it may conern:

Be it known that l, GEORGE B. Soo'rT, of thecity of Brooklyn, county of Kings, and State of New York, a citizen of the United States of America, have made a new and useful Improvement in Printing-Telegraphs, of which the following is a specification.

My improvement relates to double typewheel printers, by which groups of letters and to figures are alternately printed in two lines near the margins of a single strip of paper. WVhere a single press-pad is employed to accomplish this result, it is either usual to have two independently rotated type -wheels or I 5 else, if the two type-wheels are rigidly connected together, that they be rota-tedto a predetermined position, where, upon the opera tion of the press mechanism, the presspad isthrown to one side or the other to print from either the letter or figure wheel, at the will of the transmitting operator. I

The object of my invention is to enable the printing of letters after figures, and vice versa,

without first rotating the type-wheels to a predetermined position, by means of mechanism of greater efficiency, and which is less intricatethan any heretofore employed for that purpose.

My invention is here shown as applied to a printer in which the step-by-step rotation of the type-wheels is controlled by short electrical impulses alternately of positive and negative polarity. The escapement electro-magnet for controlling the rotation of the type- 5 wheels is in the same circuit with a neutral electro-magnet, which is only brought into action to effect printing upon a prolongation of strument, preferably, a neutral electro-magnet, which serves to shift the press pad from one side to the other under either type-wheel at the will of the transmitting operator. This second main line is normally opened, and remains so at all times during the printing of letters, and the armature-lever of the electromagnet therein is normally held in such a po: sition by a retracting-spring as to retain the press-pad under the letter-wheel while no current is flowing over said line; but when it is desired to print a figure instead of a letter a current is transmitted over the second main line at the same time that the type-wheels are being rotated to a position to print. Thus, while the type-wheels are being rotated, the press-pad is shifted under the figure-wheel by the attraction of the armature of the electromagnet in the second line, and upon a prolongation of current on'the first line the impression of a figure will be taken.

Iwill now describe my invention by a ref- 7 5 erence to the accompanying drawings.

Figure 1 represents a view of that part of a receiving-instrument to which my invention relates. Fig. 2 represents 'a diagram of the transmitter.

T T are type-wheels, respectively provided upon their peripheries with letters and figures, which are subject to a constant tendency to rotation through a pinion, N, and a clockmotor connected therewith by a spur-wheel, N. Upon the same shaft 0 with the typewheels is an escapement-wheel, H, whose stepby-step rotation is controlled by escapementpallet P, actuated by an electro-1nagnet whose coils are in the circuit L with those of mag- 0 net M, for controlling the operation of the press-lever. Press-lever \V is pivoted upon a shaft, Z, and connected to armature A, to which is attached a tail-piece and a retracting-spring, r.

t is an adjustable stop for limiting the retracted position of the press-lever.

The press-lever W under the type-wheels is provided with a bracket, 1), to which is attached an arm, t, at right angles thereto and 100 parallel with arm W. A spindle, 8, having 'a press-roller, q, rigidly attached thereto, is

loosely j ournaled in arm 15 and lever W, thereno current is passing over line l,under theinfiuence of retracting-spring p, lever 9 .holds press-roller q to the right or directly under ()n the other-hand, if

'F by branches 8 f. In like manner the letter and figure keys are connected in pairs to the the letter type-wheel. a current is flowing over line Z, armature t is attracted and lever 9 holds the press-roller to the left or under the figure type-wheel.

Instead of the prongs of lever g for operating press-roller q, the free end of 9 could be connected to spindle s by any ordinary joint which would permit said arm to give the pressroller a toand-fro movement.

I do not intend tolimit my invention to any particular means of connecting lever g to the press-roller q,- but I wish to broadly elaimthe laterally-shifting press-roller and the armatu re-lever g for controlling the same.

In the transmitter shown in Fig. 2, (l is a circuit-reversing wheel, whose periphery is provided with conducting and non-conducting spaces, with which two conducting-brushes, a and b, respectively connected to the copper pole of battery B and zinc-pole of battery B, make frictional contact. The conductingand non-conducting spaces are of equal length,and the free. ends of brushes ab rest upon the periphery of said wheel, a distance apart equal to one space, thus enabling a current to alternately flow from a copper and zinc pole.

Wheel 0 has a metallic hub, h, and. a contactbrush, 0, connected with the main line L.

P is a base-board carrying a circular series of electro -magnets, which are equal to the characters upon each type-wheel,for arresting rotating arm A, which is rigidly connected with the circuit-breaking wheel 0 by means of shafts. Shaft s is geared with a constantlymoving motor, and its rotation is continuous as long as the arm A is not arrested by any one of the circular range of electro-magnets m. "When, however, the armature of an electro-magnet,m, is projectedinto the path of A, I

the circuit-breaking wheel 0 is arrested and a prolonged positive or negative current. is transmitted to line, according as the spring a or b happens to be in contact with a conducting portion of said wheel.

F F are two circular rings, of conducting material, insulated from each. other,fcarrying finger-keys, which respectively represent the letters of the alphabet upon the periphery of one type-wheel, and numerals and various other characters upon the periphery of the other type-wheel.

w is a series of anvils or stops forming electrical contacts for the letter-keys, and y is a series of anvils or stops forming electrical contacts for the figure-keys. If the letter A on one type-wheel is abreast of the figu re 1 on the other type-wheel, and B is abreast of figure 2, &c., it is obvious that the depression of the finger-key A should cause arm A to be arrested in the same position as would the numeral-key representing the figure 1, and likewise that letter-key B and figure-key 2 should arrest arm A in the same position. To accom' plish this result, the anvils of letterkey A and figure-key 1 are connected together at point 15, and thence by a common wire through one of the electro-magnets m, thence to point 11 v and battery'Lb, point 10, to the key-frames]? other electro-magnets, m. By depressing letter-key A a local circuit will thus be completed through one of the electro-magnets m, and a local circuit through the same electromagnet will also be completed by the depression of figure-key 1, thereby causing the arm A to be arrested in the same position,whether the letter-key A or the figure-key 1 is depressed. In the branch f, leading from point 10 to frame F, is an electro-magnet, D. Upon the depression of a figure-key, therefore, the

armature E is attracted by electro-magnet D, and closes a second main line, I, connected with a battery, G, and the earth E. Theline [Z will obviously be closed in advance of the Q arresting-arm A. Thus upon the deprcssionof the figure-key before a cessation of the short impulses for rotating the type-wheel to any desiredposition for printing, a current is directed from line Z, and the press-roller of the i receiving-instrument is laterally shifted under the figure type-wheel, whereupon, after the type-wheels have been set, an impression will be taken from the figure-wheel.

What I claim, and desire to secure by Letters Patent, is

1. In a printing-telegraph, the combination of a main line embracing a printing and an escapement electro-magnet, substantially as described, two type-wheels, a second main line, apparatus whereby said main line is normally kept open and is only closed at or before the time of printing from one of the two type-wheels, and an electro-magnet in said second main line.

2. In a printing-telegraph, the combination of two type-wheels, a-laterally-shifting press roller, an electro-magnet, and an armaturelever for controlling the lateral position of said press-roller, and a main line connected with said electro-magnet, which is normally open, and means for closing the same during the printing of characters from one of the two type-wheels.

3. The combination, in aprinting-telegraph, of a series of letter-keys,a series of figure-keys, local circuits therefor, an electro-magnet, D, in a branch of the figure-keys, a main line, Z,

a pressshifting magnet, N, and double typewheels T T, substantially as described.

4. The combination of an electrical pulsator for directing short electrical impulses over line L, means for prolonging one of said impulses, a second main line, Z, a series of letter and figure keys for arresting the pulsator upon the transmission of any desired number of impulses, and means whereby said figure-keys are also adapted to close the second main line to shift the press-roller of a receiving-instrument, substantially as described.

5. In a printing-telegraph transmitter, the combination of a series of stop-magnets, m, to each of which are connected two branches of a local circuit, one extending to a letter-key and the other to a numeral-key, amain line, l, for l determining from which type-wheel of a receiving-instrument impressions shallbe taken, and an electro-magnet in one of said local branches for opening and closing said main line.

6. In a printing-telegraph transmitter, two series of keys, respectively representing letters and'figures, for arresting the transmitter, a main line for determining from which of two type-wheels of a receiving-instrument impressions shall be taken, and a circuit closer.

or closers for opening and closing said line, which is controlled by one set of keys only.- GEO. B. SCOTT; Witnesses:

JOHN G. SANDERS, WM. ARNOUX. 

